Dtc P2127: Throttle Pedal Position Sensor / Switch "E" (Sub) Circuit Low Input - Suzuki Swift Sport 2004 Service & Repair Manual

1A-164 Engine General Information and Diagnosis:

DTC P2127: Throttle Pedal Position Sensor / Switch "E" (Sub) Circuit Low Input

Wiring Diagram
Refer to "DTC P2122: Throttle / Pedal Position Sensor / Switch "D" (Main) Circuit Low Input".
DTC Detecting Condition and Trouble Area
DTC detecting condition
Output voltage of APP sensor (sub) is less than specified
value for 0.2 seconds continuously.
(1 driving detection logic)
DTC Confirmation Procedure
1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Keep the accelerator pedal at idle position for 2 seconds.
4) Keep the accelerator pedal at fully depressed position for 2 seconds.
5) Repeat Step 3) and 4) for 3 times.
6) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors referring to "Inspection of ECM and Its Circuits".
• Upon completion of inspection and repair work, perform "DTC Confirmation Procedure" and
confirm that the trouble has been corrected.
Step
1 Was "Engine and Emission Control System Check"
performed?
2 APP sensor mounting check
1) Check that APP sensor has been mounted to vehicle
body properly (no pinched floor carpet, etc.).
Is it OK?
3 APP sensor (sub) and its circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch, check "APP Sensor 2 Volt"
displayed on scan tool.
Is displayed voltage below 0.384 V?
Action
Trouble area
• APP sensor (sub) circuit
• APP sensor
• ECM
• Incorrect mounting of APP sensor
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
S7RS0B1104074
No
Go to "Engine and
Emission Control
System Check".
Reinstall APP sensor
properly referring to
"APP Sensor Assembly
Removal and
Installation in Section
1C".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".